.treeview{margin:10px 0 0 20px}ul{list-style:none}.treeview li{padding:2px 0 2px 16px}.treeview li.last{background-position:0 -1766px}.treeview li>input{height:16px;width:16px;opacity:0}.treeview li>label{background:url(img/treeview-background.png) 0 -1px no-repeat;margin-left:-20px;padding-left:20px}.treeview .custom-unchecked{background-position:0 3px}.treeview .custom-unchecked:hover{background-position:0 -17px}.treeview .custom-checked{background-position:0 -77px}.treeview .custom-checked:hover{background-position:0 -97px}